Our good detective, John Lowe, gets a friendly invitation to ring in Devil's Night with James March, who you'll remember as the man who built the Hotel Cortez, complete with all the hidden corridors and chambers to hide his hundreds of murders. He is based on the real-life serial killer, H.H. Holmes.

Turns out, not only is he the ringleader of the hotel, but he's also the serial killer master who instructed the nation's most notorious killers so they could obtain infamy.

And those deceased, yet undead, killers of nightmares are back for one night and joking over their old slaughters while they enjoy a good meal and a deadly dessert, of course.

Unfortunately, for John, his double martini isn't helping his vision or train of thought as the evening progresses.

We finally meet Lily Rabe's character this season. She's playing one of the few known female serial killers, Aileen Wuornos, who killed seven men in Florida in 1989 and 1990. Wuornos was also depicted by Charlize Theron in the 2003 film Monster, which won her an Oscar. In other words, no pressure for Rabe. Right. But Rabe really takes the character and makes it her own, fitting perfectly into the AHS: Hotel scene. Rabe goes for a more crazed version than we saw in the film, and she's fantastic.

Other party guests for the evening include the aforementioned Dahmer, who killed, dismembered and ate 17 men and boys in between 1978 and 1991 and Richie Ramirez, who killed more than a dozen people in California in the 1980s.

We even got to see a hooded Zodiac Killer, who has seven confirmed victims but claimed 37 murders throughout the late '60s, though his identity remains a mystery.

Serial killer John Wayne Gacy also appeared in this episode. Gacy killed 33 men and boys in the 1970s and hid the bodies in his basement. He gave the other killers home improvement tips in tonight's episode, leading to some eerie dark humor.

Just like at the end of the Woody Allen film, John wakes up near the end of the AHS episode thinking the experience could have all been a simple dream, but knowing better in his gut.

It's still unclear why exactly John was invited to the serial killer party. Owen Wilson's character in Midnight in Paris is a struggling screenwriter and, thus, garners inspiration from his famous writer companions for the night. Perhaps John has a serious dark side we haven't yet uncovered. And this is the part where we remember the deadly sin murders.

Do you think John could be secretly responsible for the deadly sin murders?